This gleaming emerald urban field of grass gives a new meaning to "going green." In an effort to draw attention to problems within the city of Madrid, anonymous artist collective Luzinterruptus produces site-specific light installations. According to the Madrid-based duo, there is an escalating light pollution problem in their city. While the European Union is aggressive about environmental awareness and maintaining the pollution levels, the "Dept. of the Environment of the City Council of Madrid rules for illuminated signs, adopted a couple of years ago" and has "changed the rules for pharmacy signs, to allow them to be replaced with much more powerful ones."

As a result of these luminous artificial lights that filter a shade of green on everything around it, there is an unnaturally virescent glow that mutes all other colors, even seeping into surrounding homes. The lime-tinted lights also contribute to the invisibility of the night sky's celestial bodies. Luzinterruptus shines a light (no pun intended) on the excessively strong drugstore lights while remaining somewhat whimsical in their installations titled Malas hierbas mutantes, translated as Mutant weeds. The public pieces feature fluorescent glow sticks simulating blades of mutated grass creeping out of the concrete ground. The artistic group placed the installations in three downtown locations for a few hours to make a statement and observe reactions of passersby.

Be sure to check out the time-lapsed video of the artists constructing each of the public installations, below.